Electrochemical device and electric device

An electric device, comprising an electrochemical device, the electrochemical device comprises:

• a housing, wherein an accommodating space is formed inside the housing;
• and
• a wound electrode assembly, accommodated in the accommodating space, wherein the wound electrode assembly is wound around a winding axis, the wound electrode assembly comprises a positive electrode plate and a negative electrode plate, the positive electrode plate comprises a positive electrode active material layer;
• and along a winding direction of the positive electrode plate, the positive electrode active material layer has a positive electrode winding starting end and a positive electrode winding ending end;
• wherein
• when observed along a direction of the winding axis, a straight line passing through the positive electrode winding ending end and orthogonal to the winding axis is defined as a first reference line, a straight line orthogonal to the first reference line and orthogonal to the winding axis is defined as a second reference line, and a straight line passing through the positive electrode winding starting end and orthogonal to the winding axis is defined as a third reference line, wherein an angle α exists between the third reference line and the second reference line, and 0°≤α≤30°.